Closure disk



July 24,, 1923- 1,452,995 W. L. WRIGHT CLOSURE DISK Filed April 15 1922 anon H11 nr, or reason, new roan, I eoarorron', or rumour, new rear, n ooarorroir or tones, or mn'sun 1st 1L5.

enosunn nrsn.

' Application filed April 15, 1922. Serial Ito. 552,990.

To all whom it may concern:

it own that l, WILBUB L. WRIGHT, a citizen of the United States of erica, and resident of Fulton county of Oswego,

- State of New York, have invented certain new and useful Improvements in and Relating to Closure Disks, of which the followiis a specification.

3 his invention relates to certain improve ments in closure disks for bottles and other containers; and the objects and nature of the invention will be readily understood by those 'sed in the art in the light of the following explanations of the accompanying drawings illustrating what ll now believe to be the preferred mechanical expression or embodiment of the invention from among other forms, and constructions within the spirit and scope thereof.

An object of the invention is to provide a one-piece papenmaterial closure disk that can be rapidly and economically produced in guantitles and that will embody an integra portion capable of performing the func tions of a pull or e cting tab and arrad over and normally covering a thin portion of the disk so formed as to permit the passage of a suction straw or tube theretough, when the tab is elevated, through which the bottle contents can be partially or entirely withdrawn without removal of the disk h'om its position otherwise sealing the bottle mouth, and furthermore to so cut and to the disk during the p of ma the e, as to provide a'portion of th.

disk to form said tab in thicess but thicess of the disk itself and capable of being bent up to expose a thin wall in thicmess equal to but a slight ction of the full thicmess of the and thus to provide a pomionthat can. successfully perform dish extracting tunetions without the necessity of added bracelements to prevent the tab b separating or tearing from the dish when the tab is. subjected todisk extracting pull.

With these and other objects in view my invention consists in a a novel features in construction and in lotions and tea- 8 more Elsi? and particularly set forth and specified hereinafter. I q

' scale.

ferring to the accompanying drawings: Fig. 1 1s a top plan of a closure disk embodymg my invention:

Fig. 2 is a bottom plan thereof: Fig. his a perspectiveview showing th pull tab bent up to approxitely extractiposition:

ig. t is a sectional view on an enlarged Fig. 5 shows the disk on an enlarged scale, in vertical section with the pull tab elevated and a drinking straw shown by dotted lines extending through the weakened part of the relbatively thin floor normally covered by the to Closure disks of this t e are cut or punched from sheets or we s of so-called board or paper material cposed of pulp or other fibrous material, which is more or less hard, stifi and resilient. This board as a finished product is single ply although in the process of manufacture several plies or. layers of pulp ma be brouht together to form the board. lhis boa p the peculiar characteristics of more or less easily splitting into. layers horizontally or in lanes warallel with its hard top and bottom aces. 11 fact has been taken advantage of informing clwure dis with pull tabs consisting of a ton e like portion of the top surface of the "i cut and split from the disk and in thicmess usually sli htly less than half the thichess of the dis as it was heretofore believed that it wasnecessary to make the tongues very thin in .order to separate them from the disk y and not to weaken thedisk. These thin ton however, would tear and separate fro "the disks under disk extracting strain ever when staples were introduced in an ofio r I to limit the splitting action and to brace th connection between tongue and 'di a a 1 1 l, tearing.

l have discovered, tt the d can be succesfull made d used with that in tlllCkllBSS are but slightly less the full thichess of the disk, 1. l uti this discovery in .provi-'l-- the If very thin wall portion that is cient to support and uphold the tone inst he'- which elevating movement thecep will horizontally split epproximetely along the horizontul plane in which the' normel conditions, end thet provides for the of strows or tuhes through which the contents of e hottle seeded by the dish con he sucked end that elso provides such.

. in he t In the perticulur exemple illustreted by the 1 ,11 show e. stiifif more or less resilient single-ply one-piece peper muteriul clos disk 1, cut from, soy, so-cnlled forty point honrdf i, e., stock epproxute l forty thods of an inch in thicess slthough of course, 1 do not wish to so limit my invention). Y

A pull tub or tone-like portion 2' on renged npproetely redielly of the disk is cued on the top surface of the dish by e verticul cut 3 ermnding down through the mejor portion of the thickness of the dish hut stopping short of the hottom surtoce out the dish. For instnnce with n forty-point disk, the verticul depth of the cut 8 would he epproxetel thirty live points. The cut 3 is so torme that the tongue or tub will extend inwerdly' toward the control portionot the dish with the base of the tongue where the tongue joins or merges into. the disk, located 'upproximutely near the outer edge portion of the disk. It do not however, wish to limit my invention to such pnrticulnr urrengement oi the tongue or tub.

The mnteriel of the dish is depressed or otherwise removed et the top surtuce ot the disk to form n depression or recess 4i sit the inner or tree'end of the tongue or tub, to render the free end of the disk conveniently eccessihle tor the purpose of elevating the se to upright or pull tnh csition during e meterinl ct verticel teh tong outfit terminntes. The thiclmess of the tub or tongue will hence he epproxutely equel to the vertical depth of the cut 3.

The disks can he menufuctured end placed on the market with the pull teh defined or outlined by the cut 3 but still connected et its hottom into the disk, not split from the dish. The disks will thus he inserted in the bottle mouths end the tab will he ele= veted'hy inserting thefinger nail in recess t to en end stnrt'the initisl elevntion of the end of the teh to the extent neces= sery to enehle the M: rated free end of the tele end pull'the seine upwury to completethe sepnrntion ofthe teh down to its use end complete upwnrd swing of the tuh on bending line 5. The

bending line con he estuhlished hy vertimlly' depressg the" dish by euitehle moons epplied to the h top slung line 5 npprozsi the dish below the tree end teh. Howevenwhen put on it hold the tnh when in norrnel gers to grasp the olemesses met/sly connehting the sepnruted ends of? the out 3 end nrrnnged trnnsversely of the axis of the teh end dfilzilllg thetnh hose or the junction. of the tnhwith the body of the disk; This depression of the dish else, tends to prevent touring end causes the tub to bend at the desired e. llnstend ot put= ing the disk .on the rnerhetwith the underside of the tub joined, throughout its length into the disk for subsequent splitting therefrom, the disk can he put onthe'niurlret with the teh pertisll released et its under side or the splitting operation can he started or initiated at the free end of the tub during the process of manufacture, hy the upwnrd blow of u bumper egeinst the under side of portion of the no mnrket, the

hill

free end of the dish is not eleveted shove the plene of the top surtnce ot the dish end disks in cupping mechines.

hence does not interfere with the use oil the v Considernhle pulling force is exerted on the upstanding tuh to .extrect the cap from the bottle mouth seeled therehy, end under such pulling strnin, the'reletively very t tubs of the prior urt would often teer oh ut the junction with the dish end required 7 the application of stuples to prevent split ting of the dish through to its etinuntion of the tuh. l

l have discovered thet, of the tn h elmost equals thnt oil the disk, the tub; possesses sucient tensile strength to sustuin the disk extructing pull without it the thiclmess ltlll tearing or seperution end thnt the thicess ot the dish shove the plane in which cut 3! terminate -is suficient to resist touring in continuetion oi the ends of cut 3 towerd the dish edge end hence nvoids the necessity of emploging steples or other reinforcing-devices hose ot the tnh.

B thus forming n teh thet'in thiclmen uost equels'the thic otthe dish, ll-

provide o thin well or door 8 for the recess or depression occupied hy the tub end exposed when the teh is elevuted, end this well is oi? suficient strength to support end upowered position end to revent depression of the tnh down through the dish. This thin hottoin well nlsoenehles inc-to provide for the pets sage of sucking straws or tuhesinto the hot tle' sealed by the dish, utter the pull tnh hes been eleveted, end without removing the dish. There is considemhle deundfor e dish possessing t cheructeristic for use in egein close end soul the dish while in the bottle mouth utter the strew or teen ltd eretotore epplied to the dish et the llii ltd

the consumption of mills, end verious settaaeaeee withdrawn. There is also demand for acnepiece pull-tab disk that will permit the passage of a straw therethrough, but that also will seal and close the bottle mouth when the straw or tube opening which will admit air as well as the tube or straw and that will be covered. by the tab when pressed down into the recess and onto said floor. So far as v the present invention is concerned, I prefer to have this thin wall or floor normally imperforate. For. instance, in the drawings, I show the under side of the cap at about the bottom face of the thin wall 8 scored or indented by meeting converging lineslO without perforating or cutting through the floor to form the floor. with a weak area intermediate the length and width of the door that will easily respond to the pressure of a straw or tube end on the top surface of the floor, by breaking through and permitting passage of the tube' or straw and providing a hole of suficient area to receive the tube and permit air leakage into the bottle as the contents are withdrawn. The weakened area can be formed by any suitable scoring or the like, applied to the bottom surface of the cap duri the process of manufacture, or the wall can be otherwisecut or formed for the passage of the tube, without forming what 1s known as a pouring opening, and which I and width of will not weaken the cap and which can beclosed by pressing down the pull tab.

What I claim is:

1. A one-piece pull-tab paper-material closure disk having a vertical cut extending down throughout the major portion of the thickness of the disk but stopping short of its bottom surface to form a very thin bottom wall below the cut, said pa er material readily splitting in planes para lel with its upper and lower sur aces, said out outlining a. pull tab, said very thin wall forming the floor of the recess normally occupied by the pull tab and being formed for the passage of a suction tube intermediate the length the floor when said tab is elevated,

2. A oneiece pull-tab closure disk composed entire y of paper material capable of splittingin planes approximately parallel with its faces, said disk having a pull .tab outlined in its top surface by a vertical cut extending downwardly through the major portion of the thickness of the disk to pro vide a thinwall below the tab and forming the floor of the recess normally occupied by the taband having an intermediate portion formed for the ready passage of a suction tube when the tab is elevated and adapted to be covered by the tab when again pressed down to normal position. r

3. A one-piece pull-tab closure disk composed of paper material capable of readily splitting longitudinally, said disk hav' a pull tab of substantial thickness out-line in its top face by a vertical out, said cut providing a thin wall formin the floor of the recess normally occupied y the tab, said floor being normally imperfo te and having an intermediate portion weakened by lines at the under face of the disk to provide for the easy passage of a suction tube.

a. A one-piece pull-tab closure disk composed entirely of paper material capable of splitting in planes approximately parallel with its faces, said disk having a pulltab outlined in its top surface by a vertical cut extending. downwardly through the major portion of the thickness of the disk to provide a' thin wall below-the tab and forming the floor of the recess normally occupied by the tab} the thickness of said tab being but 'slightly'less than the thickness of the disk,

whereby the necessity of bracing the tab and disk by a staple is avoided.

5. As an article o-fmanufacture, a papermaterial closure disk formed to provide for the top exposure of an intermediate normally-sealed and covered area embodying a portion'formed when uncovered to permit passage of a drinking tube, said disk being imperforate against passage of liquid and adapted for use in capping machinery, and

having a top tab part overlyingsaid area,

and at one end joined to the disk against complete detachment therefrom wunder disk extracting pull and adapted to be swung up and expose said areaandform a disk extracting pull handle.

6. As an article of manufacture, a aper material closure disk formed to provi e for the top exposure of a normally-sealed covered relatively-thin depressed floor embodying a weakened part to permit pamage of a drinking tube when the floor is exposed at the top, said disk being imperforate against passage of liquid and having a depressed top tab overlying said floor and adapted to be bent up to expose said'floor and form a disk of being bent WILBUB L. WRIGHT. 

